Waltee s



UNITED STATES PATENT OFFICE.

`VALTER S. ATWOOD, OF `YVATERBURY, CONNECTICUT, ASSIGNOR TO THE PLUME 8u ATWOOD MANUFACTURING COMPANY, OF SAME PLACE.

SHAFT-TIP EORCARRIAGES.

SPECIFICATION forming part of Letters Patent No. 296,107, dated April 1, 1884.

Application filed VJanuary 17, 1884. (No model.)

To all whom t may con/cern).-

Beit known that I, VALTER S. A'rWooD, of Vaterbury, in the State of Connecticut, have invented an Improvement in Tips for Carriage Shafts, Poles, 8m., of which the following is a specification. i

In the manufacture of thimbles, cane and umbrella ferrules, and tips for carriageshafts, it has been usual to take a circular blank of metal `and stamp the saine, up in dies by successive operations, so as to form the same into a tube of the proper diameter and length, similar to a cartridge case. These` successive stamping or drawing operations are illustrated in Figures l to 4 in the annexed drawings. In these operations the sides were usually considerably reduced in thickness and the closed end remained of about the same thickness as the original sheet. In making `articles that taperedwsuch as thimblesand carriage-tipsf it has been usual with manufacturers, for ten or fifteen years at least, to employ `a tapering punch and a tapering die, and to force the nearly-cylindrical blank shown in Fig. 4 into the shape illustrated by the section in Fig. 5. In performing this operation the thick metal at the closed end was benty up around the end of the` punch and served to re'enforce or strengthen the th imble, "ferrule, or other article so manufactured. The aforesaid mode of procedure is made luse of by me to prepare the blank for my improved article, hence the mode of manufacture thus far described does not constitute my invention, the same being Well known in the trade. Y

Tips for carriage-shafts are exposed to sudden variations of temperature; also to alternate dryness and moisture; hence they often become loose and rattle very disagreeably. If the end of the shaft is` slightly too large, the tip is liable to be split in driving it on.

Myinvention is for obviatin'g the aforesaid difficulties, and for producing a carriage-tip that is not liable to split When driven on, that is slightly elastic, and will yield to variations in temperature and to the expansion or contraction of the wood without becoming loose or rattling when in use.

My tip is madein substantially thehereinbefore-described andWell-known manner, asillustrated in the sections, Figs. l to 5. I take the tip or ferrule shown in Fig. 5 and corrugate the same by the action of dies. The corrugations may be all in one direction, or they may cross each other. I prefer lto corrugate the said tip lengthwise withf y reverse curves, as shown in the elevation, Fig. 6, and the end View, Fig. 7, such curves being gradual and extending from the open rear end toward the thick-metal closed end. These corrugations prevent the tip being revolved around upon the shaft or pole. They yield if the Wood fits the ferrule too tightly; hence the ferrule is not liable to be split in driving it on, or by the wood becoming wet, and the ferrule or tip being of metal corresponding to rolled or'wrought metal, and hence very tough and springy, the metal will yield to the ordinary variations from expansion or contraction without becoming loose upon the wood. Hence my improved tip is a new article of manufacture possessing properties not found in ferrules heretofore made.

I claim as my invention- The tip or ferrule for carriages, shafts, or similar articles, having the metal at the closed end thicker than the sides, and the said sides tapering and corrugated, substantially as set forth. y

Signed by me this 12th day of January, A. D. 1884.

W. S. ATWOOI). 

